Removing font tags using, for example, HTML::TokeParser::Simple is quite straight forward 
#!/usr/bin/perl
use warnings;
use strict;
use HTML::TokeParser::Simple;

my $html = do{local $/; <DATA>};
my $p = HTML::TokeParser::Simple->new(\$html);
while (my $t = $p->get_token){
  next if $t->is_tag(q{font});
  print $t->as_is;
}

__DATA__
<p><font face="Verdana">one <a href="link.html">two</a> three</font></
+p>

[download]
<p>one <a href="link.html">two</a> three</p>

[download]
How would you go about this using HTML::TreeBuilder? The closest I've got replaces everything between font tags with content (text) zapping any tags. 
#!/usr/bin/perl
use warnings;
use strict;
use HTML::TreeBuilder;

my $html = do{local $/; <DATA>};
my $h = HTML::TreeBuilder->new_from_content($html);

my $para    = $h->look_down(_tag => q{p});
my $font    = $para->look_down(_tag => q{font});
$font->replace_with($font->as_text);
print $para->as_HTML;

__DATA__
<p><font face="Verdana">one <a href="link.html">two</a> three</font></
+p>

[download]
<p>one two three

[download]

In reply to Removing font tags using HTML::TreeBuilder by wfsp

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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